The A260/A280 ratio of a double-stranded DNA sample can be used to assess its purity. The value for the pure DNA is ----------------

TLS Online TPP Program

#Question id: 4951

#SCPH28 | Zoology

The synthesis of new DNA requires the prior existence of oligonucleotides to serve as primers. On Earth, these primers are small RNA molecules. This latter observation is evidence in support of the hypothesized existence of

TLS Online TPP Program

#Question id: 14262

#SCPH05 I Biotechnology

The BOD5 value of a waste-water feed stream to an activated-sludge unit is S0 = 300 mg/l, and the effluent is desired to be S = 30 mg/l. The feed flow rate is F = 2× 10^7 l/day. For the recycle ratio of α = 0.5 and a steady-state biomass concentration of X = 5 g/l, Use the following kinetic parameters:

 

calculate Required reactor volume (V). 

_______________10^6

TLS Online TPP Program

#Question id: 2617

#I Life Science/ Life Sciences Group – I-V

According role of regulatory proteins, RNA polymerase and one or more promoter elements, mostly three levels of transcription are there, choose correct one

TLS Online TPP Program

#Question id: 15710

#SCPH28 | Zoology

A phenolic compound, is sometimes added to inhibit the enzyme IAA oxidase responsible for the breakdown of IAA.

TLS Online TPP Program

#Question id: 750

#I Life Science/ Life Sciences Group – I-V

In strong acid and at elevated temperatures, for example perchloric acid (HClO4) at more than 100°C, nucleic acids tend to: